#!/bin/bash

. /usr/syno/plugin/volume/mount/SynologVolumeMount.sh

function enumAllVolumes ()
{
	/bin/grep normal /run/synostorage/volumetab | /bin/awk '{ print $2 }'
}

function findBestVolume ()
{
	local candidate
	local db_root_dir="synolog"
	if HCIIsSupport; then
		db_root_dir="synolog/$(GetSN)"
	fi

	candidate=$(enumAllVolumes \
				| /bin/xargs -n1 -i /bin/sh -c "/bin/stat -c '%Y %n' {}/@database/$db_root_dir/.*XFERDB" 2>/dev/null  \
				| /bin/sort -k1 -nr \
				| /bin/head -n1 \
				| /bin/cut -d' ' -f2)

	local CANDIDATE_VOLUME
	if [[ ${#candidate} -ne 0 ]]; then
		CANDIDATE_VOLUME=$(GetVolumePath "$candidate")
	fi
	if ! IsNormalVol "$CANDIDATE_VOLUME" ;then
		CANDIDATE_VOLUME="$(/usr/syno/bin/servicetool --get-available-volume)"
		if [ "${CANDIDATE_VOLUME:0:7}" = "/volume" ]; then
			/bin/echo -n "${CANDIDATE_VOLUME}"
		fi
	else
		/bin/echo -n "${CANDIDATE_VOLUME}"
	fi
}

function createDBLink ()
{
	local bestVolume
	bestVolume=$(GetVolume "/var/log/synolog/.AFPXFERDB")
	if ! IsNormalVol "$bestVolume" ;then
		bestVolume=$(findBestVolume)
	fi

	if [ ! -d "${bestVolume}" ]; then
		exit 0
	fi

	env RESULT=0 MOUNTPOINT="${bestVolume}"	LOCATION="INTERNAL" \
		/usr/syno/plugin/volume/mount/SynologVolumeMount.sh --post
}

createDBLink